EP 0953246 B1 20000419 - METHOD FOR MULTIPLYING THE LEVELS OF CODING
Title (en)
METHOD FOR MULTIPLYING THE LEVELS OF CODING
Title (de)
VERFAHREN ZUR VERMEHRUNG VON CODIERUNGSSTUFEN
Title (fr)
PROCEDE POUR MULTIPLIER LES ETAPES DE CODAGE
Publication
Application
Priority
- DE 19828631 A 19980626
- DE 19837228 A 19980817
- EP 9806777 W 19981029
Abstract (en)
[origin: WO9912318A2] The invention relates to a multi-step method for doubling levels of coding, whereby uninterrupted periodic sequences are provided as code elements, e.g. an alternating current with an identical frequency and phase relation and the code elements are marked in relation to each other by variations in amplitude. The inventive method enables amplitude variation to begin with an alternating positive or negative half-period so that the following element can be marked according to code, thereby enabling two levels to be marked with one code element. Instead of three levels, six levels are obtained. When expressed in numbers, combinations of 9,27,81,243 are obtained for 3 levels and 2,3,4,5 columns. Combinations of 36,216,1296 and 7776 are obtained for 6 levels and 2,3,4,5 columns.
IPC 1-7
IPC 8 full level
H04L 25/49 (2006.01); H04L 27/02 (2006.01)
CPC (source: EP US)
H04L 25/4902 (2013.01 - EP US); H04L 27/02 (2013.01 - EP US)
Designated contracting state (EPC)
AT CH DE ES FI FR GB IT LI NL SE
DOCDB simple family (publication)
WO 9912318 A2 19990311; WO 9912318 A3 19990514; WO 9912318 B1 19990617; AT E192003 T1 20000515; AU 1231999 A 19990322; CA 2335849 A1 19990311; CN 1286858 A 20010307; DE 19881588 D2 20010927; DE 59800132 D1 20000525; EP 0953246 A2 19991103; EP 0953246 B1 20000419; ES 2147679 T3 20000916; US 6463104 B1 20021008
DOCDB simple family (application)
EP 9806777 W 19981029; AT 98955523 T 19981029; AU 1231999 A 19981029; CA 2335849 A 19981029; CN 98813326 A 19981029; DE 19881588 T 19981029; DE 59800132 T 19981029; EP 98955523 A 19981029; ES 98955523 T 19981029; US 28177399 A 19990330